Gas burner



July 25, 1933. c. 'G. IRISH n AL GAS BURNER Filed Jan. 29, 1932 Invenior 6 7 jirzls'h v f1? flaw/'1 {172v J'T'Jlf. 772 022205 v PatentedJuly 25, 1933 UNE'TEE-JDTSTTJATFS V onnrnrrone. IitISf-I, THEE- o nunniueron, Ann FRANK Mf'rHoMns, or

RAPID c rxgsou'rn nAKo'rn lens BURNER Application filed January 29, 1932. Seria1- I1 'o.589;736.-

- This invention relates toa gas burner expressly designed .for consumingnatural gas and primarily, but not'necessarily, intended to be employedfor special work in dental laboratories andthe like; e

In perfecting a structure to accomplish the desired result, we have evolved and produced a novel assembly of carefully selected parts structurally co ordinated and appropriately proportioned and matched to pro vide a resultant productzwh-ich is-efficient in performance, positive and dependable in action, smooth and quiet in".-'operation, and otherwisesusceptible f/Of fulfilling the re quirements' beyond-"expectation. 7 e

v A structure?"characterized b y thc aforesaid details and properties is by way ofcomparison withknown prior art vburners, an'ap- 'preciable contribution to the art and trade embodying such advantages and indispensable features as appropriately controlled combustion, practical heat radiation, safety of ad uStment and ,mamtenance, and s1mpl1c1tyand economy "in manufacture and salen Other objects and mechanical achieve ments embodied ln f the complete structural organization will become more readily apparent to persons skilled'in the art asthe de- "taileddescrlption is read in (3011]L1Il0b10nW1l3l1 the accompanying'drawing-z" In the drawing: T i p Figure 1 is a top plan View of the'preferred embodiment of ourinvention.

' Figure 2 is a central vertical sectional View taken approximately on the plane of the line 22 of Figure 1. v '7 Although the structure isindividualized by a plurality of distinguishable parts, and

details, it is essentially composed of aunique base and superstructure supported on said base. The base is generally designated by the numeral 3 and comprises an elevated plate at imperforate except for a single opening formed adjacent the centralportion thereof. This plate constitutes an integral part of a tripod including radial strap-like legs 5 appropriately curved and terminating in supporting feet 6.

One of the legs, which may be conven-- 'threadedynozzle 11 ofathe'supply hose at ching 'fixturem, Y 1

iently referredto as the front leg includes an extension 7 provided with agretaining hole.- Associatedwith this leg and prefer; ablyif'ormedintegrallytherewith is an outstanding supporting bracket '8 formed with 65 an upstandingofreerend portion 9 terminating in a terminal. 10"formed with a screwthreaded hole to accommodate the screw- .v J Itiwill be observedothat this fixture includes av hose attaching nipple 13' appropriately constructed to accommodate and retain the supply. pipe or. hose; (not shown).

The entire fixture 12 is: adjustably support- 5 ed in the part 10 ofthebracket. The passage throughsaid fixture is constricted and:

gradually reduced at the point 14L andfis further constricted at 15-t0- form a gas discharge orifice of desired proportion.

The removable unit 16 comprisesca suitablyshaped and proportioned perpendicular casing 17 having its upper end-reduced as at 18 and constructed to receiveand support aremovable grid 19. The grid 19 is formed with-- a multiplicity of flame discharge slots 20. Attached to'the lowerportionof one "ofthe side wallsofthecasing 24; mounted in the lower end portion of the casing with its ends suitably connected to r opposed side walls of the casing and provided with a depending screw-threaded stud v95 25 suitably connected with an intermediate. part ofv the cross rod' and which extends down through the opening the plate 4, the, screw-threaded end being exposed to accommodate an easily accessible thumb position designates a de 5 j pending lug carried 'by the tube 21 and seated in the aperture inthepart"? of the plate to-aid in stabilizing and maintaining ,the-parts-inassembled relationship. o

v An additional feature of security is pro;

vided in the form of a horizontal cross rod I the case when used in laboratories and the nut 26 which provides the primary clamping and rentention means.

An essential part of the invention is denoted by the numeral 27 this-being in form of a disc adjustably mounted on the thread-.

like.

It is evident that the detachable unit 16 clamped and appropriately; supported on'the base 3 provides a novel assembly susceptible ofseparation for cleaning purposes. This unit 16 is important in that it'constitutes' the primary air mixing chamber (tube 21) and the secondary mixing chamber (casing 17). The method of providing a dependable quick separable connection between the part 3 and 16 is a distinctly practical and modern arrangement.- 9

Y This is true because of the scientific selection and unification of parts capable of promoting stability and rigidity. Considerableimportance is attached to the tripod like base with its elevated plate 4, feet equipped legs topermit-air circulation beneath-the base, and the'L-shaped bracket Sserving to accommodate the adjacent accessories. The fixture 12 is bodily movable, and the disc 27 is'independently adjustable to afford the desired air regulating features. v

In practice, this part 27 is of-a diameter corresponding approximately to the flared air intake 22. It is evident therefore that all of the parts co-operate in producing a successful structure which, it is believed,

will supersede similar prior art devices embodying analagous "fundamental features. It is thought'from the'fore'going description'that the advantagesand novel features of the invention will be readily apparent.

his to be understood that changes may "bemade in the construction and'in the com-' bination and arrangement of the several parts provided that such changes fall within the scopeof the appended claims.

e claim: j 1. In a structure of the 'class described, a base-embodying a plate having marginal supporting legs, a vertically elongated open I .of said casin ,nut carried by the screw-threaded part of ended casing removably seated on said base tube within the vicinity of the base, a removable grid mounted in the upper portion a cross-rod mounted in the lower portion thereof and provided with a depending screw-threaded retaining stud extending. down through an opening in the adjacent portion .of said plate, a clamping the stud for detachably securing the casing to the base.

2. In a structure of the class described, a base. embodying a plate having marginal supporting legs, a vertically elongated 0 enended casing removab'ly seated on said" ase and provided with an outstandinginjector tube within the vicinity 20f the base, aremovable grid mounted in the upper portion of the casing, across-rod mounted in the "lower portion thereof and provided with a depending screw-threaded retaining stud ex tending down through an opening in the adjacent portion of said plate, a clamping nut carried by the screw-threaded par-tot the stud for :detachably securing the casing to the base, a bracket mounted :on .said base and projecting ioutwardly beyond the adj-acent-intake end of said tube, a fixture constructed to accommodate. a gas supply hose and including a screw-threaded nozzle adjustably ,mounted in said bracket and projecting into theadjacent end of the. tube, and a screw-threaded washer {mounted on said nozzle and adjustable toward and from said tube.

3. A gas burner of the class described comprising a base, ;a plain upright casing havingzits lower end detachably connected to the basewith its upper end reduced, a

grid removably arranged in thesaidfr-educed upper end of the casing, a'horiz-ontally arranged injector tube having one end-connected with afside portionof the casing adjacent the lower end thereof with the tube in communication withthelower part of the casing, a bracket supportedfrom the base and having an upstanding por'tion arranged in front of the free endofsthe tube, a nozzle passing through said part of the bracket and 1115 extending into the free end of the tube.

OARLETO N G. TRISH.

FRANK M. 'THOMAS. THERLO E. BURRINGTON. 

